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W. A. MARITZEN.

FIREPLACE HEMING DEVICE.

APPLICATION man MAR-4.1918

1,314,968. Patented Sept. 2, 1919.

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FIREPLACE HEATING DEVICE.

Patented Sept. 2, 1919.

APPLICATION FILED MAR. 4 I918 iii/77mm:

GRAPH (50., WASHINGTON. D- C.

WILLIAM A. MARIT ZEN, OF SAN MATEO,

CALiFORNIA.

FIREPLACE HEATING DEVICE.

atinas.

L Specification of Letters Patent.

Patented Sept. 2, 1919.

Application filed March 4, 1918. Serial No. 220,266.

To all whom it may concern: j

Be it known that I, WILLIAM A MARIrznN, a citizen of the United States, residing at San Mateo, in the county of San Mateo and State ofjCalifornia, have invented certain new and useful Improvements in )Fireplace Heating Devices, of which the following 1s a specification. j a The present invention has to do with improvements in heating devices as particularly adapted for use in fireplaces, the primary object being to provide a simplified structure which is applicable to standard fireplaces, provision being preferably made for adjusting the parts so as to properly fit the customary recess constructions. It may a here be stated that one of the serious defects of a fireplace is that practically all of the heat which is produced by the fire built therein escapes up the chimney flue so that little benefit, as regards the roomlcontalnlng the fireplace, is derived'from its use aside from the heat obtained from direct radiation from the fire, which is, as well known, very slight indeed. y j i My aim has been to overcome this difficulty by providing a radiating body embodying a heat conveying chain er whlch is so formed and arranged as to cause the air passing therethrough, which is heated by the fire, to be directed back into the room instead of allowing its passage/into the flue of the chimney. p l secondarily my device contemplates provision for the maximum heating surface for efficiency acting upon the air utilized for heating the room containing the device.

These and such other objects as may hereinafter appear are attained by the novel construction, combination and arrangement of parts to be hereinafter specifically described and claimed. Reference will now be had to the accompanying drawings forming a part of this specification, wherein:

Figure 1 is a front elevation of a fireplace showing the application of my invention thereinto; r

Fig. 2 is a vertical sectional view of the fireplace showing the'heating device in end elevation. l Fig. 3 is "a vertical sectional view through the heating device itself; and

Figs. 4 and 5 are transverse sections taken on the planes indicated by the lines 4% and 5-5 of Fig. 3, res ectively. a

13hmaghom: the ifolnwing detail tion and on the several figures of the drawings, snnilar parts are referred to by llke reference characters.

Referring to the drawing, 1 designates a conventional fireplace construction which embodies a recess in the wall with a connecting flue 2 in the chimney. Into the fireplace recess the device which forms the subect matter of this invention is inserted. One of the particular features of my device is its unitary structure, complete in itself, capable of being inserted and removed from the fireplace, and not depending upon the walls of the recess to form the confines of the heating chamber.

The device consists of a metallic body preferably, which is tubular in construction, substantially rectangular in cross section, embodying the base portion 3, and a vertically extending portion 4 connecting with the horizontal portion 5. The fire is built over the horizontal base portion 3 just referred to and this portion is preferably narrower than the' vertical portion,as will be observed by reference to Fig..l,so as to afford proper space to dispose the andirons at each side thereof Where such devices. are used. However, the fire may be built directly upon this horizontal portion and the middle is suitably supported so as to sustain the weight and to prevent distortion by means of posts or pillars 6 These pillars not only havea supporting function but are designed toassist in heating the air which intakes through the forward entrance of this base portion which contacts as it passes through into. the rear connecting portion 4 hereinbefore referred to. The rear portion just mentioned conforms preferably to the usual angular shape of the rear wall of the fireplace recess and it includes an adjustable connection indicated at 7.

In other words, a separate section isprovided which fits into the lower part of the portion 4, suitable fastening means being provided to hold the section at adjusted position. It follows that the horizontal portion 5 will bexproperly adjusted for the height of the particular fireplace, in, addition to whichthe horizontal portion is providedvvith the adjustable section 8 which properdepth of enables adjustment for the the recess At the angle between the verticalportlon 4L andthe horizontal portion 5 the metal of the forward wall of the devise is pressedontwardly a: as to provide oppositely inclined planes designated 9 which constitute adefiector. The deflector not only affords an increased heating surface for acting upon the air passing through the device but directs the smoke and byproducts laterally of the upper portion directly adj acent to the flue so that the aforesaid smoke and by-products pass about the upper portion into said flue. Since the upper portion mentioned overhangs the fire in immediate proximity thereto, a very efficient heating action as regards the air passing through the device is obtained' Iincrease the efficiency of the heating action by corrugating the forward wall of the vertical portion as indicated at 10. As hereinbefore premised, the air passes from the room into the forward part of the base portion 3 where it is subjected to the heat from the fire resting above the same and the heat of the pillars 6, then passes up the vertical portion 4: and out th horizontal portion which, for the purposes of this description will be called the discharge chamber as distinguished from the receiving chamber in the base 3. 1 By using the simple article herein described the air from the room is heated and passed back into said room instead of removed from the being allowed to pass up the flue.

Since my heating device is a unitary structure it will be obviousthat it would adequately perform the air heating function even when it is not positioned within afireplace because it does not require the walls of the fireplace to constitute the confining meansifor the air conduit and this is a special feature because when desired it may be fireplace and the walls will have been protected against the discoloration and smudging of that portion which is coveredby the invention and which is directly subjected to the heat and smoke of the fire.

Having thus described my what I claim as new is:

1. A fireplace heating device of the class described comprising a unitary tubular conduit complete in itself, said conduit having a horizontal base portion arranged with its mouth adapted to receive air from the room in which the fireplace is built, said conduit extending vertically at the rear of the base portion and outwardly of the fireplace at the top of said vertical portion so as to discharge the air back into the room aforesaid after being subjected to the heat during its passage through the conduit, the front wall of the conduit adjacent to the top portion being pressed outwardly to form an oppositely inclined deflecting surface at this point for shunting the products of combustion about the sides of the conduit and into the fiue of the fireplace, the vertically and invention,

outwardly extending portions of the conduit overhanging the'base portions so as to be directly heated by the fire imposed upon the base portion.

2. A fireplace heating device of the class described comprising a unitary tubular conduit complete in itself, said conduit having a horizontal base portion arranged with its mouth adapted to receive air from the room in which the fireplace is built, said conduit extending vertically at the rear of the base portion and outwardly of the fireplace at the top of said vertical portion so as to discharge the air back into the room aforesaid after being subjected to the heat during its passage through the conduit, the front wall of the conduit adjacent to the top portion being pressed outwardly to form an oppositely inclined deflecting surface at this point for shunting the products of co1nbustion about the sides of the conduit and into the flue of the fireplace, the vertically and outwardly extending portions of the conduit consisting of telescopic sections, including means to hold one of said sections at adjusted position, and the base portion having supporting posts arranged in spaced relation therewithin to assist in heating of the air as it passes throughthe conduit in circulation. V

3. A fireplace heating device adapted to be disposed bodily in an ordinary fire place, the same comprising a horizontal base portion adapted to rest upon the base of the fireplace, said base portion being hollow and open at its front end to provide a mouth to receive air from the room in which the fireplace is located, pillars located in said hollow base portion to strengthen the same and forming heat radiating elements supporting the top of, said base portion upon which a fire may be built, the base portion of the conduit having a vertically extending portion projecting from its rear end and formed with an outwardly projecting portion or extension adapted to fit across the top portion of the fireplace, said outward extension being considerably narrower than the vertical portion from which it projects so as to permit the passage of products of combustion past its sides up into a chimney above the fireplace.

4. A fireplace heating device adapted to be disposed bodily in anordinary fireplace, the same comprising a horizontal base portion adapted to rest upon the base of the fireplace, said base portion being hollow and open at its front end to provide a mouth to receive air from the room in which the fireplace is located, said hollow base portion having a hollow vertical portion projecting upwardly therefrom and practically a continuation thereof, the. vertical portion being inclined outwardly so as to extend abovethe base portion and being made in sections adjustable to enable the heater to conform with fireplaces of different sizes vertically,

the said outwardly extending portion having at its upper end a horizontal continuation thereof and the latter being of sectional form to accommodate for fireplaces of different depths.

5. A fireplace heating device adapted to be disposed bodily in anordinary fireplace, the same comprising a horizontal base portion adapted to rest upon the base of the fireplace, said base portion being hollow and open at its front end to provide a mouth to receive air from the room in which the fireplace is located, said hollow base portion having a hollow vertical portion projecting upwardly therefrom and practically a continuation thereof, the vertical portion being inclined outwardly so as to extend above the base portion and being made in sections adjustable to enable the heater to conform fiopies of this patent may be obtained for five cents each, by addressing the with fireplaces of different sizes vertically, the said outwardly extending portion having at its upper end a horizontal continuation thereof and the latter being of sectional form to accommodate for fireplaces of different depths, the front Wall of said vertical portion and a part of the front Wall of the outwardly extending portion of the conduit leading fnom said vertical portion being corrugated to provide an extending radiating surface above the base portion, and the heater being formed with an oppositely inclined deflecting surface approximately at the angle formed by the upper extremity of the heater and the outwardly inclined portion above described.

In testimony whereof I affix my signature.

WILLIAM A. MARITZEN.

Commissioner of Patents.

Washington, D. G." 

